Roland Hany

Publications associées (29)

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Insights into photovoltaic properties of ternary organic solar cells from phase diagrams

Philippe Schwaller, Roland Hany, Jakob Heier, Surendra Babu Anantharaman

The efficiency of ternary organic solar cells relies on the spontaneous establishment of a nanostructured network of donor and acceptor phases during film formation. A fundamental understanding of phase composition and arrangement and correlations to photo ...

2018

Dynamics of Charge Distribution in Sandwich-Type Light-Emitting Electrochemical Cells Probed by the Stark Effect

Frank Nüesch, Roland Hany, Matthias Diethelm

2018

Organic Salt Semiconductor with High Photoconductivity and Long Carrier Lifetime

Frank Nüesch, Roland Hany, Beat Ruhstaller, Donatas Gesevicius

2018

Time-Dependent p-i-n Structure and Emission Zone in Sandwich-Type Light-Emitting Electrochemical Cells

Frank Nüesch, Roland Hany, Beat Ruhstaller, Matthias Diethelm

2018

Strongly Red-Shifted Photoluminescence Band Induced by Molecular Twisting in Cyanine (Cy3) Dye Films

Frank Nüesch, Roland Hany, Jakob Heier, Surendra Babu Anantharaman, Chuyao Peng

Cyanine dye molecules, used as monomers or in aggregate form, find interesting applications in optoelectronic devices. Among the various aggregate species incorporating organic dyes, centrosymmetric dimers are known as nonluminescent. They can act as excit ...

American Chemical Society2017

Visible light-emitting host-guest electrochemical cells using cyanine dyes

Frank Nüesch, Roland Hany, Jakob Heier, Beat Ruhstaller, Lei Wang, Surendra Babu Anantharaman

Light-emitting electrochemical cells (LECs) can be fabricated as a single emissive organic/salt layer sandwiched between two electrodes, offering cost-effective next generation signage and lighting applications. Cyanine dyes are especially attractive to ex ...

Elsevier Science Bv2017

Cyanine tandem and triple-junction solar cells

Frank Nüesch, Roland Hany, Björn Niesen, Lei Wang, René Uwe Schneider, Hui Zhang

Ultrathin bilayer heterojunction solar cells using cyanine electron donors and electron acceptor C-60 are used to fabricate monolithically stacked tandem and triple junction devices. Sub-cell stack sequences as well as C-60 layer thicknesses are optimized ...

Elsevier2016

Doping Evolution and Junction Formation in Stacked Cyanine Dye Light-Emitting Electrochemical Cells

Roland Hany, Lei Wang, Beat Ruhstaller, Matia Bulloni

Cyanine dyes are fluorescent organic salts with intrinsic conductivity for ionic and electronic charges. Recently (J. Am. Chem. Soc. 2013, 135, 18008-18011), these features have been exploited in cyanine light-emitting electrochemical cells (LECs). Here, w ...

Amer Chemical Soc2016

Dissociation of charge transfer states and carriers separation in bilayer organic solar cells - A time-resolved electroabsorption spectroscopy study

Jacques-Edouard Moser, Jelissa Risse, Roland Hany

Ultrafast optical probing of the electric field by means of Stark effect in planar heterojunction cyanine dye / fullerene organic solar cells enables to directly monitor the dynamics of free electron formation during the dissociation of interfacial charge ...

Amer Chemical Soc2015

Resonance Light Scattering in Dye-Aggregates Forming in Dewetting Droplets

Gian-Luca Bona, Roland Hany, Jakob Heier, Raffaele Mezzenga

Small organic semiconducting molecules assembling into supramolecular J- and H- aggregates have attracted much attention due to outstanding optoelectronic properties. However, their easy and reproducible fabrication is not yet sufficiently developed for in ...

American Chemical Society2014

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Dissociation of charge transfer states and carriers separation in bilayer organic solar cells - A time-resolved electroabsorption spectroscopy study

Jacques-Edouard Moser, Jelissa Risse, Roland Hany

Amer Chemical Soc2015

Resonance Light Scattering in Dye-Aggregates Forming in Dewetting Droplets

Gian-Luca Bona, Roland Hany, Jakob Heier, Raffaele Mezzenga

American Chemical Society2014